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<head><meta charset="utf-8"><title>have the instructions changed? · t-compiler/wg-self-profile · Zulip Chat Archive</title></head>
<h2>Stream: <a href="https://rust-lang.github.io/zulip_archive/stream/187831-t-compiler/wg-self-profile/index.html">t-compiler/wg-self-profile</a></h2>
<h3>Topic: <a href="https://rust-lang.github.io/zulip_archive/stream/187831-t-compiler/wg-self-profile/topic/have.20the.20instructions.20changed.3F.html">have the instructions changed?</a></h3>

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<a name="211683770"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187831-t-compiler/wg-self-profile/topic/have%20the%20instructions%20changed%3F/near/211683770" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Steve Klabnik <a href="https://rust-lang.github.io/zulip_archive/stream/187831-t-compiler/wg-self-profile/topic/have.20the.20instructions.20changed.3F.html#211683770">(Sep 29 2020 at 21:03)</a>:</h4>
<p>i was trying to do <a href="https://blog.rust-lang.org/inside-rust/2020/02/25/intro-rustc-self-profile.html">https://blog.rust-lang.org/inside-rust/2020/02/25/intro-rustc-self-profile.html</a>, but when i run crox, it says "Error: could not find profiling data file*.mm_profdata". nothing in the post talks about a mm_profdata file, and the tools don't seem to produce it</p>



<a name="211683799"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187831-t-compiler/wg-self-profile/topic/have%20the%20instructions%20changed%3F/near/211683799" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Steve Klabnik <a href="https://rust-lang.github.io/zulip_archive/stream/187831-t-compiler/wg-self-profile/topic/have.20the.20instructions.20changed.3F.html#211683799">(Sep 29 2020 at 21:03)</a>:</h4>
<p>any ideas what i'm doing wrong?</p>



<a name="211684116"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187831-t-compiler/wg-self-profile/topic/have%20the%20instructions%20changed%3F/near/211684116" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Wesley Wiser <a href="https://rust-lang.github.io/zulip_archive/stream/187831-t-compiler/wg-self-profile/topic/have.20the.20instructions.20changed.3F.html#211684116">(Sep 29 2020 at 21:05)</a>:</h4>
<p>We just merged some changes that aren't compatible with the version currently being used by rustc but we haven't cut a release yet.</p>



<a name="211684124"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187831-t-compiler/wg-self-profile/topic/have%20the%20instructions%20changed%3F/near/211684124" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Wesley Wiser <a href="https://rust-lang.github.io/zulip_archive/stream/187831-t-compiler/wg-self-profile/topic/have.20the.20instructions.20changed.3F.html#211684124">(Sep 29 2020 at 21:05)</a>:</h4>
<p>Sorry!</p>



<a name="211684201"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187831-t-compiler/wg-self-profile/topic/have%20the%20instructions%20changed%3F/near/211684201" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Steve Klabnik <a href="https://rust-lang.github.io/zulip_archive/stream/187831-t-compiler/wg-self-profile/topic/have.20the.20instructions.20changed.3F.html#211684201">(Sep 29 2020 at 21:06)</a>:</h4>
<p>ah! just bad timing then. no worries, this isn't super urgent.</p>



<a name="211684221"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187831-t-compiler/wg-self-profile/topic/have%20the%20instructions%20changed%3F/near/211684221" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Steve Klabnik <a href="https://rust-lang.github.io/zulip_archive/stream/187831-t-compiler/wg-self-profile/topic/have.20the.20instructions.20changed.3F.html#211684221">(Sep 29 2020 at 21:06)</a>:</h4>
<p>though you may want to add a "go back and update the post" to that checklist <span aria-label="smile" class="emoji emoji-1f642" role="img" title="smile">:smile:</span></p>



<a name="211684272"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187831-t-compiler/wg-self-profile/topic/have%20the%20instructions%20changed%3F/near/211684272" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Wesley Wiser <a href="https://rust-lang.github.io/zulip_archive/stream/187831-t-compiler/wg-self-profile/topic/have.20the.20instructions.20changed.3F.html#211684272">(Sep 29 2020 at 21:06)</a>:</h4>
<p>Yeah, great point!</p>



<a name="211684347"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187831-t-compiler/wg-self-profile/topic/have%20the%20instructions%20changed%3F/near/211684347" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Wesley Wiser <a href="https://rust-lang.github.io/zulip_archive/stream/187831-t-compiler/wg-self-profile/topic/have.20the.20instructions.20changed.3F.html#211684347">(Sep 29 2020 at 21:07)</a>:</h4>
<p>If you checkout <a href="https://github.com/rust-lang/rust/commit/88522bb33a652a9517e182a7126239d98b91aa21">88522bb33a652a9517e182a7126239d98b91aa21</a> of the <a href="https://github.com/rust-lang/measureme">measureme repo</a>, it should work as the blog post describes</p>



<a name="211684965"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187831-t-compiler/wg-self-profile/topic/have%20the%20instructions%20changed%3F/near/211684965" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Steve Klabnik <a href="https://rust-lang.github.io/zulip_archive/stream/187831-t-compiler/wg-self-profile/topic/have.20the.20instructions.20changed.3F.html#211684965">(Sep 29 2020 at 21:11)</a>:</h4>
<p>it did! thank you! (you pass <code>--rev SHA</code> to  <code>cargo install</code>, for reference <span aria-label="smile" class="emoji emoji-1f642" role="img" title="smile">:smile:</span> )</p>



<a name="211685044"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187831-t-compiler/wg-self-profile/topic/have%20the%20instructions%20changed%3F/near/211685044" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Wesley Wiser <a href="https://rust-lang.github.io/zulip_archive/stream/187831-t-compiler/wg-self-profile/topic/have.20the.20instructions.20changed.3F.html#211685044">(Sep 29 2020 at 21:12)</a>:</h4>
<p>Oh, good! I was wondering if there was an easy way to do that with <code>cargo install</code>.</p>



<a name="211685079"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187831-t-compiler/wg-self-profile/topic/have%20the%20instructions%20changed%3F/near/211685079" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Wesley Wiser <a href="https://rust-lang.github.io/zulip_archive/stream/187831-t-compiler/wg-self-profile/topic/have.20the.20instructions.20changed.3F.html#211685079">(Sep 29 2020 at 21:12)</a>:</h4>
<p>Let us know if you have any questions! <span aria-label="smile" class="emoji emoji-1f642" role="img" title="smile">:smile:</span></p>



<a name="211732521"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187831-t-compiler/wg-self-profile/topic/have%20the%20instructions%20changed%3F/near/211732521" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/187831-t-compiler/wg-self-profile/topic/have.20the.20instructions.20changed.3F.html#211732521">(Sep 30 2020 at 09:04)</a>:</h4>
<p>We just need that rustup support for the tooling <code>:)</code></p>



<hr><p>Last updated: Aug 07 2021 at 22:04 UTC</p>
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